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OPENFLOW/SDN FOR OPTICAL NETWORKS
© 2010 Taylor & Francis Group, LLC
ingress optical node, at the expense of longer signaling latency caused
by the waiting time in the Nox controller.
Lightpath Release
e Active Approach for Lightpath Release e active approach is a
special solution for lightpath release. It is only applicable when the
amount of data for the arriving traffic is known in advance. In this
case, the connection holding time in the optical domain can be pre-
dicted. erefore, the Nox controller can insert a hard timeout field
in the corresponding flow entry in the flow table. is field can be
used to indicate the connection holding time. ...